ULN2803

The ULN2803 is designed as one kind of eight NPN darlington connected transistors with suited for interfacing between low logic level digital circuitry (such as TTL,CMOS or PMOS/NMOS) and the higher current/voltage requirements of lamps,relays,printer hammers or other similar loads for a broad range of computer, industrial, and consumer applications.All devices feature opencollector outputs and free wheeling clamp diodes for transient suppression.Also it is designed to be compatible with standard TTL families while the ULN2804 is optimized for 6 to 15 volt high level CMOS or PMOS.

The absolute maximum ratings of the ULN2803 can be summarized as:(1)junction temperature:125°C;(2)storage temperature range:55 to +150 °C;(3)operating ambient temperature range:0 to +70°C;(4)base current-continuous:25 mA;(5)collector current-continuous:500 mA;(6)input voltage (except ULN2801):30 V;(7)output voltage:50 V.If you want to know more information such as the electrical AC characteristics about the ULN2803,please download the datasheet in www.seekic.com .